MichaelMeissner

If you are using the Teensy 4.0, one possibility is to get the Adafruit Teensy 3.x feather adapter. I'm putting the Adafruit link along with a compatibility page I wrote for the old unofficial Teensy wiki site: Adafruit Teensy 3.x feather...

Majority of them are postal return. Some have extra solder on the bottom, usually on the 4 slots that hold the USB connector (very likely the USB connector didn't seat properly during reflow soldering and it got some manual rework). A few might...

I'm curious what are likely 'cosmetic' flaws in the 'LEFTOVER_TEENSY_OTHER' item? I mean I will find out eventually when my grab bag gets here. I realize it is a grab bag, and it could be anything, but I was wondering what kind of things were...

Next week PJRC will have a Leftover Teensy Stuff sale, now that SparkFun is manufacturing all Teensy boards. Teensy 4.0 with pins soldered crooked (but fully functional) at half price will come with a free grab bag of other leftover stuff. USA...

The leftover stuff sale is live. https://www.pjrc.com/store/leftover_stuff_sale.html

Cards that are 32GB or smaller are formatted with FAT32 and typically have the VFAT support on top of FAT32 (VFAT adds support for names other than the 8+3 uppercase). Cards that are 64GB or larger are formatted with ExFat.

It is with dismay that I see this news, just as I was about to launch a product line, based on the Teensy hardware! My relationship with SparkFun is extremely negative, to say the least; five years ago, my (crooked) business partner, without my...

Thanks, fixed. I forgot to hit ^C to save the html link when I did ^V in the url box, it grabbed the previous text.

Well it is free until your program is running. When you call malloc/new, it allocates out of RAM2. For static/global variables you can use 'DMAMEM' and the variable is put into MEM2. Note, these variables cannot be initialized. I don't recall...

Well in addition to the RAM1 and RAM2 normally that comes with the Teensy 4.1, you have the option to solder 1-2 memory chips to the Teensy. You can solder 1 or 2 PSram chips You can solder 1 flash memory chip You can solder 1 flash memory chip...

I've been idly wondering whether Adafruit will continue to sell Teensies. Now, I realize that Adafruit sells some Sparkfun things, and Sparkfun sells some Adafruit things, and they address different markets. But the change of the supplier may...

Yes, the Teensy 4.1 changed the pads under the PCB to be the first USB that can be used for programming, and not the second USB which can act as a USB host. On the 4.1, you have to use the 5 pins in the PCB to get to the second USB. I believe...

One minor thing to consider is something I run into with camera viewfinders. If you are going to view your screen outdoors and you will be wearing polarized sunglasses, note that TFT displays typically have one orientation that there are...

Yes, that's my hope... especially coding time! I'm not ready to think about any new products until Sparkfun has been shipping Teensy 4.0 and Teensy 4.1 for a while. We've been pouring a lot of work into this transition for the last few months...

In general, it is a convenience vs. speed thing. Arduino is a wrapper over C++, and the code is compiled directly to the target machine. Circuit Python is an interpreter that runs on the target machine, that reads the source code, converts it...

Dout and Din can only be the following pins: 6 (OUT1D) 7 (OUT1A), default DOUT 8 (IN1), default DIN 9 (OUT1C) 32 (OUT1B) 38 (Alternate for IN1) 39 (Alternate for OUT1A) MCLK1, LRCLK1, and BCLK1 all must be their respective pins (23, 20, and...

IIRC, you also don't want to use the 'optimize space' option in Arduino, as I believe it uses a version of printf that does not have floating point support.

I can't answer about PlatformIO, but under Arduino, if you are building for the Teensy 4.0, the Teensy 4.1, or the Teensy MicroMod, the default for double is 64-bit and constants are 64-bit by default. The hardware has direct support for both...

It depends. Does the XBee board have its own micro processor on it, or are you supposed to mount the XBee on a board that uses the thing plus mounting. If it is the later, I believe the Sparkfun Thing Plus boards use the same pinout as the...